Evaluation of Drought in Gandaki River Basin of Nepal
Journal Title: Journal of Drought and Climate change Research (JDCR) - Year 2024, Vol 2, Issue 6
Abstract
Drought is often considered a silent disaster, leading to food and water shortages, displacement, and even conflict. Although evidence of ongoing climate change has been observed, limited research is carried out on drought conditions in Gandaki River Basin of Nepal. This study analyzed four indices i.e., Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI), Land Surface Temperature (LST) and Normalized Difference Drought Index (NDDI) for January and November between 1991 and 2021 by using Geographic Information System (GIS) and remote sensed data. NDVI showed that dense vegetation decreased by 93.26% and built-up area increased by 96.88% in January compared between 1991 and 2021. Compared between 1991 and 2021, NDWI showed that the high water stressed area increased by 49.5% in January. NDDI showed increased in abnormally drought area in January (164.03%) compared between 1991 and 2021.Both climate change and human activities significantly contributes increasing trend of drought over the 30-year period in Gandaki River Basin. The study suggests exploring the potential of modern tools such as GIS and Remote Sensing for prediction of drought and monitoring its impact on ecosystems and human. This will be beneficial for policy makers for developing the strategy for combating drought and climate change.
Authors and Affiliations
Aayush Bhattarai,; Sachin Timilsina; Santosh Ayer; Gayatri Paudel; Menuka Maharjan
Keywords
Related Articles
- EP ID EP754910
- DOI https://doi.org/10.22077/jdcr.2023.6865.1046
- Views 3
- Downloads 0
Investigating the Interaction Effects of Meteorological Parameters on Evaporation from the Water Surface Using Variance Analysis
To investigate the main and interactive effects of various meteorological parameters on the rate of evaporation from the water surface, variance analysis was used. Based on the analysis, all the mentioned parameters had...
A Brief Overview on the Problems of Greenhouse Owners in Khorramabad, Iran, Over 2020-2021
In recent years, greenhouse production in Khorramabad, Iran, has suffered severely from problems such as the Corona pandemic, declining average annual rainfall, and severe inflation. On the other hand, the greenhouse dev...
Evaluating the Quality of Shiraz Wastewater Treatment Plant Effluent for Agricultural Uses in Drought Conditions Utilizing IRWQI, NSFWQI, and OWQI Indicators
The utilization of non-conventional water sources, such as saline water, drainage, and sewage, has proven to be highly effective in managing droughts given the limitations of the country's water resources. The primary ad...
Prioritization of Factors Affecting Drought using the Fuzzy Analytic Hierarchy Process Method (Study Case: Torbat Heydarieh City)
Iran is one of the driest countries in the world and is exposed to severe droughts. Drought is the result of the mutual effects of natural and social surroundings. In addition to affecting agricultural production, it als...
Evaluation of Different Drought Indices to Find the Mos t Applicable Index (Case Study:Aleshtar Plain)
One of the main challenges in monitoring drought is determining an index that is highly reliable based on the monitoring objective. Assessment and drought monitoring is considered one of the most important tools for drou...